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[Apport retracing service <1430905@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1419324 ***
    https://bugs.launchpad.net/bugs/1419324

Thank you for taking the time to report this crash and helping to make
this software better.  This particular crash has already been reported
and is a duplicate of bug #1419324, so is being marked as such.  Please
look at the other bug report to see if there is any missing information
that you can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report.  Please continue to report any other bugs you may
find.

** Attachment removed: "CoreDump.gz"
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** Attachment removed: "ProcMaps.txt"
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** Attachment removed: "ProcStatus.txt"
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** Attachment removed: "ThreadStacktrace.txt"
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** This bug has been marked a duplicate of private bug 1419324

** Information type changed from Private to Public

** Tags removed: need-amd64-retrace

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Packages, which is subscribed to gdm in Ubuntu.
https://bugs.launchpad.net/bugs/1430905

Title:
  gdm crashed with SIGSEGV in g_main_context_dispatch()

Status in gdm package in Ubuntu:
  New

Bug description:
  sudo apt-get install gnome-session-wayland and login with wayland.
  show a black screen and return gdm. cannot use wayland

  ProblemType: Crash
  DistroRelease: Ubuntu 15.04
  Package: gdm 3.14.1-0ubuntu2
  ProcVersionSignature: Ubuntu 3.19.0-8.8-generic 3.19.1
  Uname: Linux 3.19.0-8-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportVersion: 2.16.2-0ubuntu2
  Architecture: amd64
  Date: Thu Mar 12 00:33:42 2015
  ExecutablePath: /usr/sbin/gdm
  InstallationDate: Installed on 2015-03-08 (3 days ago)
  InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  ProcCmdline: /usr/sbin/gdm
  ProcEnviron:
   LANG=en_HK.UTF-8
   LANGUAGE=en_HK:en
   PATH=(custom, no user)
  SegvAnalysis:
   Segfault happened at: 0x411b50:	mov    0x18(%rdi),%rax
   PC (0x00411b50) ok
   source "0x18(%rdi)" (0x00000018) not located in a known VMA region (needed readable region)!
   destination "%rax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: gdm
  StacktraceTop:
   ?? ()
   ?? ()
   g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  Title: gdm crashed with SIGSEGV in g_main_context_dispatch()
  UpgradeStatus: Upgraded to vivid on 2015-03-08 (2 days ago)
  UserGroups:

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